cache-apt-pkgs-action/scripts/update_md_tocs.sh
2025-10-04 22:17:11 -07:00

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#!/bin/bash
#==============================================================================
# update_md_tocs.sh
#==============================================================================
#
# DESCRIPTION:
# Automatically updates table of contents in all markdown files that contain
# doctoc markers. The script handles installation of doctoc if not present
# and applies consistent formatting across all markdown files.
#
# USAGE:
# update_md_tocs.sh [OPTIONS]
#
# FEATURES:
# - Auto-detects markdown files with doctoc markers
# - Installs doctoc if not present (requires npm)
# - Applies consistent settings across all files:
# * Excludes document title
# * Includes headers up to level 4
# * Uses GitHub-compatible links
# - Provides clear progress and error feedback
#
# TO ADD TOC TO A NEW FILE:
# Add these markers to your markdown:
# <!-- START doctoc generated TOC please keep comment here to allow auto update -->
# <!-- DON'T EDIT THIS SECTION, INSTEAD RE-RUN doctoc TO UPDATE -->
# <!-- doctoc --maxlevel 4 --no-title --notitle --github -->
#
# <!-- END doctoc -->
#
# DEPENDENCIES:
# - npm (for doctoc installation if needed)
# - doctoc (will be installed if missing)
#
# EXIT CODES:
# 0 - Success
# 1 - Missing dependencies or installation failure
#
# NOTES:
# - Only processes files containing doctoc markers
# - Preserves existing markdown content
# - Safe to run multiple times
#==============================================================================
source "$(git rev-parse --show-toplevel)/scripts/lib.sh"
# Install doctoc if not present
if ! command_exists doctoc; then
echo "doctoc not found. Installing..."
if ! command_exists npm; then
echo "Error: npm is required to install doctoc"
exit 1
fi
if ! npm_package_installed doctoc; then
echo "Installing doctoc globally..."
if ! npm install -g doctoc; then
fail "Failed to install doctoc"
fi
fi
fi
print_status "Updating table of contents in markdown files..."
# Find all markdown files that contain doctoc markers
find . -type f -name "*.md" -exec grep -l "START doctoc" {} \; | while read -r file; do
log_info "Processing: ${file}"
if ! doctoc --maxlevel 4 --no-title --notitle --github "${file}"; then
log_error "Failed to update TOC in ${file}"
fi
done
print_success "Table of contents update complete!"